How can we be sure the prosecutor acts properly before the grand jury?

The testimony of witnesses, presentation of evidence, and legal instruction before the grand jury is recorded by a court stenographer, and is reviewed by the court in any case where the grand jury returns an indictment. An indictment may be dismissed for misconduct on the part of the prosecutor, for any error that might prejudice the grand jury’s decision, or for insufficiency of the evidence to support the charges in the indictment.


Prosecutors, like all lawyers, are subject to a written code of ethical rules. A violation of those rules may result in serious sanctions.

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1. What is a grand jury?
2. Why does New York need grand juries?
3. Who presents evidence to the grand jury?
4. Who decides what evidence to present to the grand jury?
5. What types of evidence are received by the grand jury?
6. What is grand jury witness immunity?
7. How does the grand jury know what law to apply to a case before it?
8. How can we be sure the prosecutor acts properly before the grand jury?
9. What happens after all the evidence has been presented?
10. Do the grand jurors know about all of these powers?
11. Why is the grand jury proceeding secret?
12. Is the grand jury symbolic in New York? (It’s been said that a prosecutor can “indict a ham sandwich.”)